For those interested in the Mastech MS8218, it is sold under different names and may be cheaper.
Today, I was looking on Amazon and found
http://www.amazon.com/Sinometer-MS8218-000-count-Multimeter-Interface/dp/B002D3G1WS/$99.95 + free shipping. Don't forget to use Martin's affiliate Amazon link to support him if you are interested in the above for $100.
PS. I have no financial affiliation with Martin or Amazon. I'm just trying to point out a potentially good deal for those interested in the MS8218.